What is the correct way to include the standard input/output library in a C program?

#include <stdio.h>
#include "stdio.h"
import stdio
using stdio;

Which of the following is the correct way to declare an integer variable named count?

def count;
var count;
int count;
int: count;

Which data type is used to store a single character in C?

double
float
int
char

How do you write a comment in C?

# This is a comment
<!-- This is a comment -->
// This is a comment
/* This is a comment */

What is the purpose of the main() function in a C program?

It contains all the program code
It is used to include libraries
It is the entry point of the program
It is optional in C programs

What does the %d format specifier do in a printf() statement?

Displays a floating-point number
Displays an integer value
Displays a character
Displays a string

Which of the following is true about the return statement in the main() function?

It only works inside loops
It is optional and does nothing if omitted
It restarts the program
It terminates the program and returns a status code to the operating system

Which of these are valid ways to initialize an array of integers with 5 elements in C? (Choose all that apply)

int arr[5] = {1, 2, 3, 4, 5};
int arr[5];
int arr[] = {1, 2, 3, 4, 5}
int arr[5] = {0};

What is the primary purpose of the #include directive in a C program?

To include external libraries or header files
To define a new function
To initialize variables
To compile the program

Which operator is used for the modulus operation in C?

#
%
^
&